Track-Ready Grip for the Sport Compact Crowd
The Toyo Proxes Sport R Tire in 245/40ZR18 97W XL brings the Sport R line’s competition-focused compound to a popular sport compact and coupe fitment size. TOY178340 carries a 200 AA A UTQG treadwear rating and satisfies the 7/32 inch tread depth requirement used by many track day and time attack organizations, giving drivers a street legal tire that can also be pushed hard on track.
Key Features
- Extreme performance summer compound built for maximum dry traction
- 200 AA A UTQG treadwear rating meets competitive racing class tread depth requirements
- Extra Load (XL) construction with a W speed rating (168 mph) and 97 load index
- 245/40ZR18 size fits a wide range of sport compact and sports coupe applications
- Reinforced tread compound resists deformation under hard cornering
Specifications
| Detail | Value |
|---|---|
| Part Number | TOY178340 |
| Tire Size | 245/40ZR18 |
| Load/Speed Rating | 97W |
| Load Range | XL (Extra Load) |
| UTQG Treadwear | 200 AA A |
| Speed Rating | W (up to 168 mph) |
| Brand | Toyo Tires |
| UPC | 4981910012344 |
What’s Included
- One (1) Toyo Proxes Sport R Tire, size 245/40ZR18 97W XL
About Toyo Tires
Toyo Tire Corporation has been engineering high performance tires since 1945, building a reputation for tires that hold up in both street and competitive motorsport environments. The Proxes Sport R line was developed specifically for racers who need a DOT tire that still performs at the limit, combining a race-focused compound with the tread depth needed to satisfy competition class rules.
Related Parts on Our Site
- Toyo Proxes R1R Tire – 225/45ZR15 87W
- Toyo Extensa HP II Tire – 245/40R18 97W
FAQ
What is the TOY178340?
The TOY178340 is a Toyo Proxes Sport R extreme performance summer tire in size 245/40ZR18 with a 97W load and speed rating and Extra Load (XL) construction, designed for street and track use.
Is the Toyo Proxes Sport R street legal?
Yes, the Proxes Sport R is a DOT-approved tire, so it is legal for street use while still meeting the tread depth specification required for many competitive racing classes.
What is the UTQG treadwear rating on this tire?
This tire carries a 200 AA A UTQG rating, reflecting a performance-oriented compound with strong dry traction ratings.
What speed rating does the 245/40ZR18 97W XL have?
It carries a W speed rating, rated for sustained speeds up to 168 mph under proper inflation and load conditions.
Is this tire Extra Load (XL) rated?
Yes, this size is built with Extra Load (XL) construction, giving it a higher maximum load capacity than a standard load tire of the same size.
What vehicles commonly run a 245/40ZR18 tire?
This size is common on sport compact cars and sports coupes running an 18 inch wheel fitment.
Can I use the Proxes Sport R for autocross or track days?
Yes, its 200 AA A treadwear rating and 7/32 inch tread depth were engineered to satisfy tread depth requirements for many grassroots motorsport and track day organizations.
How many tires come in this listing?
This listing includes one (1) individual tire. Order multiples if you need a pair or a full set.
Install Instructions
- Confirm the tire size, load rating, and speed rating match your vehicle manufacturer’s specifications or your intended fitment.
- Have the tire professionally mounted and balanced on an appropriately sized wheel within the approved rim width range.
- Set cold tire pressure according to your vehicle’s recommended specification, not exceeding the tire’s maximum pressure rating.
- Perform a break-in period of moderate driving for the first 100 miles before pushing the tire to its performance limits.
- Inspect tread depth and pressure regularly, especially before track or competitive use.
